Functional nanofiber filtering material and preparation method and application thereof

A nanofiber and filter material technology, applied in the field of functionalized nanofiber filter material and its preparation, can solve the problems of no sterilization and adsorption of oily particles, heavy metal silver damage, cumbersome production process, etc., and achieves easy regulation and good structure and performance. The effect of adsorption and separation, the effect of improving filtration efficiency

Active Publication Date: 2017-09-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this technology is that the nano-antibacterial agent is selected from nano-silver antibacterial agent, although it can play a role in sterilization, the heavy metal silver in it will cause inevitable damage to the human body.
The disadvantage of this technology is: this filter material only contains two materials, PVDF and polypropylene, and has no special effect of sterilization and adsorption of oily particles, and the production process is complicated and the cost is high
Although this method can play the functions of antibacterial, disinfection and deodorization, the production process is too complicated, and the sprayed layer is easy to fall off

Method used

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  • Functional nanofiber filtering material and preparation method and application thereof
  • Functional nanofiber filtering material and preparation method and application thereof
  • Functional nanofiber filtering material and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0057] A preparation method of functionalized nanofiber filter material, the specific steps are:

[0058] (1) Dry polylactic acid (PLA) in a vacuum oven at 60°C for 2 hours. Accurately weigh 14.235g N-N dimethylformamide with an electronic balance and place it in a 25ml beaker, then weigh 0.015g C 3 N 4 Nanosheet (the atomic force microscope image and thickness analysis image of the nanosheet are shown in Figure 5a with 5b shown) placed in N-N dimethylformamide, ultrasonically oscillated for 6 hours, took out the beaker, accurately weighed 0.75g of dried polylactic acid powder with an electronic balance, placed it in the beaker, stirred magnetically at room temperature for 24 hours, and prepared a uniform and Stable with C 3 N 4 Polyacrylonitrile spinning solution for nanosheets.

[0059] (2) Prepare the spinning solution obtained in step (1) on the substrate by electrospinning technology, specifically use figure 1 The electrospinning equipment shown is for electrospin...

Embodiment 2

[0062] A preparation method of functionalized nanofiber filter material, the specific steps are:

[0063] (1) Dry polyvinyl chloride (PVC) powder in a vacuum oven at 60° C. for 2 hours. Accurately weigh 5.625g N-N dimethylformamide and 5.625g tetrahydrofuran with an electronic balance and place them in a 50ml beaker, then weigh 1.5g C 3 N 4 Nanosheet (the atomic force microscope image and thickness analysis image of the nanosheet are shown in Figure 5a with 5b shown), placed in the above mixed solvent, vibrated with an ultrasonic oscillator for 6 hours, took out the beaker, accurately weighed 2.25g of dried polyvinyl chloride powder with an electronic balance, placed it in the beaker, stirred magnetically at room temperature for 24 hours, and prepared Uniform and stable C 3 N 4 Polyvinyl chloride spinning solution for nanosheets.

[0064] (2) Prepare the spinning solution obtained in step (1) on the substrate by electrospinning technology, specifically use figure 1 The...

Embodiment 3

[0067] A preparation method of functionalized nanofiber filter material, the specific steps are:

[0068] (1) Dry the polyvinylidene fluoride (PVDF) powder in a vacuum oven at 60° C. for 2 hours. Accurately weigh 8.25g N-N dimethylformamide with an electronic balance and place it in a 50ml beaker, then weigh 3gC 3 N 4 Nanosheet (the atomic force microscope image and thickness analysis image of the nanosheet are shown in Figure 5a with 5b shown) in the above solvent, vibrated with an ultrasonic oscillator for 5 hours, took out the beaker, accurately weighed 3.75 g of dried polyvinylidene fluoride powder with an electronic balance, placed it in the beaker, stirred magnetically at room temperature for 24 hours, and prepared a uniform and stable C 3 N 4 Polyvinylidene fluoride spinning solution for nanosheets.

[0069] (2) Prepare the spinning solution obtained in step (1) on the substrate by electrospinning technology, specifically use figure 1 The electrospinning equipme...

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Abstract

The invention discloses a functional nanofiber filtering material and a preparation method and application thereof, and belongs to the technical field of air purifying materials. The method comprises the following steps: adding C3N4 nanosheets into a solvent, dispersing evenly by ultrasonic vibration, adding polymer powder, dissolving evenly to obtain a polymer spinning solution containing the C3N4 nanosheets, and preparing the functional nanofiber filtering material by processing the polymer spinning solution on a substrate by the electrospinning technique; and the functional nanofiber filtering material can be well used in the filtration of organic pollutants, has high efficiency and low resistance when being used as an air filtration material, and can greatly improve the air quality.

Description

technical field [0001] The invention belongs to the technical field of air purification materials, and in particular relates to a functional nanofiber filter material and its preparation method and application. Background technique [0002] Air pollution seriously affects people's health, life, work and social economy. Filtration technology is an effective way to improve the atmospheric environment and improve indoor quality. At present, ordinary air filter materials have low efficiency and high resistance, which cannot meet people's requirements for air quality. There is an urgent need to develop a functional air filter material that can filter particulate matter with high efficiency and low resistance, and can remove air pollutants such as formaldehyde. [0003] Electrospun nanofiber filter material, due to its sparse porous structure and relatively high specific surface area, has the best performance among many filter materials. However, because it is generally spun fro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/28B01D71/30B01D71/34B01D71/38B01D71/40B01D71/42B01D71/48B01D71/50B01D71/54B01D71/56B01D69/02B01D67/00B01D46/00B01D46/54
Inventor 王海辉高雪侯嘉敏薛健
Owner SOUTH CHINA UNIV OF TECH
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